1423224 has 64 divisors (see below), whose sum is σ = 4320000. Its totient is φ = 430560.

The previous prime is 1423193. The next prime is 1423231. The reversal of 1423224 is 4223241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1423197 and 1423206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2077 + ... + 2675.

It is an arithmetic number, because the mean of its divisors is an integer number (67500).

2^1423224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2160000).

1423224 is an abundant number, since it is smaller than the sum of its proper divisors (2896776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423224 is a wasteful number, since it uses less digits than its factorization.

1423224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 615 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 1423224 is about 1192.9895221669. The cubic root of 1423224 is about 112.4840866380.

Adding to 1423224 its reverse (4223241), we get a palindrome (5646465).

The spelling of 1423224 in words is "one million, four hundred twenty-three thousand, two hundred twenty-four".